*) Security: invalid pointer dereference might occur during DNS server
response processing if the "resolver" directive was used, allowing an
attacker who is able to forge UDP packets from the DNS server to
cause segmentation fault in a worker process (CVE-2016-0742).

*) Security: use-after-free condition might occur during CNAME response
processing if the "resolver" directive was used, allowing an attacker
who is able to trigger name resolution to cause segmentation fault in
a worker process, or might have potential other impact
(CVE-2016-0746).

*) Security: CNAME resolution was insufficiently limited if the
"resolver" directive was used, allowing an attacker who is able to
trigger arbitrary name resolution to cause excessive resource
consumption in worker processes (CVE-2016-0747).

*) Feature: the "auto" parameter of the "worker_cpu_affinity" directive.

*) Bugfix: the "proxy_protocol" parameter of the "listen" directive did
not work with IPv6 listen sockets.

*) Bugfix: connections to upstream servers might be cached incorrectly
when using the "keepalive" directive.

*) Bugfix: proxying used the HTTP method of the original request after
an "X-Accel-Redirect" redirection.